Inlet Septa

Injection Port Septum

Low-bleed septum is not completely free of bleeding. The type of bleeding that occurs varies with the septum, and results in different patterns on chromatograms. In the case of high-sensitivity analysis, it is necessary to select a septum whose bleeding will not occur at a point that interferes with the peak of the target compound. Conditioning for several hours between 200°C and 250°C after extraction with hexane may help to reduce bleeding.

In the case of using a syringe for AOC, it is recommended to exchange the septum after about 100 injections. If the outside diameter of a needle of a gastight syringe is thick, it is recommended to exchange after about 50 injections.

Description

P/N

Color

Features

Standard type
(20 pcs)

201-35584

White

General-purpose septum

LL Septum
(long life type, 20 pcs)

221-48972-91

Blue

Provides significant durability improvements compared to a conventional low-bleed septum, offering both low bleed and long life.
The problem of sticking to the vaporizing chamber during continuous use at high temperatures experienced with a conventional septum has also been eliminated.

Using this septum alleviates the problem of reduced durability when the vaporizing chamber is used continuously at 450°C. Compared to the LL septum, the increase in bleed when used at high temperatures is kept at a lower level. The problem of sticking to the vaporizing chamber during continuous use at high temperatures experienced with a conventional septum has also been eliminated.

Further dimensions and specifications on request. For Research Use Only. Not for use in diagnostic procedures. This page may contain references to products that are not available in your country. Please contact us to check the availability of these products in your country.